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The Estenfication of Gibberellins with Dimethylformamide Dimethyl Acetal (DMFDMA)

  • Muhammad Shaiq Ali , James R. Hanson and Viqar Uddin Ahmad
Published/Copyright: June 2, 2014
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Zeitschrift für Naturforschung B
From the journal Zeitschrift für Naturforschung B Volume 52 Issue 10

The key step is to prepare rare gibberellins by converting the more readily available gibberellins (GA3, GA4, GA7 and GA13) into their m ethyl esters. The DMFDMA is employed as an esterifying reagent to avoid the diazom ethane due to its toxic, explosive and hazardous nature. It is observed that DMFDMA apart from esterification can also be used as acetylating and epimerizing reagent.

Keywords: Gibberellins; Esterification; Dimethylformamide Dimethyl Acetal
Received: 1997-7-7
Published Online: 2014-6-2
Published in Print: 1997-10-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

Articles in the same Issue

  1. Zu den Phasenverhältnissen im System V/Nb/O, III Die Koexistenzbeziehungen der Mischkristallreihe V1−x-NbxO2 zu den binären und ternären Phasen der Subsysteme VO2/NbO2/V2O3 und VO2/NbO2/V2O 5/Nb2O5 / The Phase Relations in the System V/Nb/O , III Coexistance Relations of Mixed Crystals V1−x-NbxO2 to the Binary and Ternary Phases of Subsystems VO2/NbO2/V2O3 und VO2/NbO2/V2O 5/Nb2O5
  2. Darstellung, 11B-, 13C -, 1H-NMR- und Schwingungsspektren von 2,2' -Bipyridylundecahydro-closo-dodecaborat(1-) sowie Kristallstruktur von (Ph4As)[(2,2′-C10H8N2)B12Hn ]·CH3CN / Synthesis, 11B, 13C, 1H NMR and Vibrational Spectra of 2 ,2'-Bipyridyl-undecahydro-closo-dodecaborate(1-) and Crystal Structure of (Ph4As)[(2 ,2'-C10H8N2)B12H11]-CH3CN
  3. Zum System Ca/Mo/O: Phasendiagramm, Synthese und Charakterisierung der ternären Verbindungen / On the System Ca/Mo/O: Phase Diagram, Synthesis and Characterization of Ternary Compounds
  4. Synthese und Kristallstruktur von Tris(diethylamino)benzylphosphonium- bromiden: [(C2H5)2N]3PCH2C6H5+ Br- · CH3CN und [(C2H5)2N]3PCH2C6H5+ Br3- / Synthesis and Crystal Structures of Tris(diethylamino)benzylphosphonium Bromides: [(C2H5)2N]3PCH2C6H5+ Br- · CH3CN und [(C2H5)2N]3PCH2C6H5+ Br3-
  5. Reactivity and NMR Spectroscopic Properties of Tri(tert-butyl)plumbyl-amine
  6. Reaktion von Cacodylsäure (CH3)2AsOOH im System HF / MF5 (M = As, Sb) und Kristallstruktur von Difluordimethylarsonium- hexafluoroantimonat (CH3)2AsF2SbF6 / Reaction of Cacodylic Acid (CH3)2AsOOH in the System HF / MF5 (M = As, Sb), and Crystal Structure of Difluorodimethylarsonium Hexafluoroantimonate
  7. Darstellung von Cyan-iod-dinitrat NCI(ONO2)2 / Formation of Cyanoiodine Dinitrate NCI(ONO2)2
  8. Synthesis, IR and X-Ray Studies of a Dioxouranium(VI) Nitrate Complex with N,N′-Tetraethyl-N″ -trichloracetylphosphortriamide
  9. Metallkomplexe mit biologisch wichtigen Liganden, XCVI [1] Palladium(II)-, Platin(II)-und Rhodium(I)-Komplexe mit (Phenyl)C-H···Metall-Wechselwirkung von Diphenylmethylen- glycinestern und von 2-Phenyloxazolinonen / Metal Complexes of Biologically Important Ligands, XCVI [1] Palladium(II), Platinum(II) and Rhodium(I) Complexes with (Phenyl)-C-H ··· Metal Interaction of Diphenylmethylene Glycine Esters and from 2-Phenyloxazolones
  10. Phosphanhaltige Palladium(II)-, Platin(II)-und Gold(I)-Komplexe mit dem Di-tbutyliminodicarboxylat-Anion N(C O2tBu)2− / Phosphine Palladium(II), Platinum(II) and Gold(I) Complexes of the Di-tbutyliminocarboxylate Anion N(C O2tBu)2−
  11. Kohlenwasserstoffverbrückte Metallkomplexe, XLIII [1] Addition von η6-Anilin-tricarbonylchrom-Komplexen an den Ethenliganden von [(OC)5Re(η2-C2H4)]+ and [(η5-C5H5)Fe(CO)2(η2-C2H4)]+ / Hydrocarbon Bridged Metal Complexes, XLIII [1] Addition of η6- Aniline Tricarbonyl Chromium Complexes to the Ethene Ligand of [(OC)5Re(η2-C2H4)]+ and [(η5-C5H5)Fe(CO)2(η2-C2H4)]+
  12. Zur Kenntnis eines synthetischen Kentrolits/Melanotekits des Indiums: Pb2In2Si2O9 / On an Synthetic Kentrolite/Melanotekite of Indium: Pb2In2Si2O9
  13. Polysulfonylamine, XCVI [1]. Homokonjugate aus Di(organosulfonyl)aminen und ihren konjugierten Anionen: Vier Kristallstrukturen mit asymmetrischen [N -H ··· N ]--Wasserstoffbrücken / Polysulfonylamines, XCVI [1]. Homoconjugates Formed from Di(organosulfonyl)amines and their Conjugate Anions: Four Crystal Structures Featuring A symmetric [ N - H ··· N ]- Hydrogen Bonds
  14. Polysulfonylamine, XCVII [1] Di(organosulfonyl)amine und ihre konjugierten Anionen als simultane Baugruppen in zwei supramolekularen Strukturen / Polysulfonylamines, XCVII [1] Di(organosulfonyl)amines and their Conjugate Anions as Simultaneous Building Blocks in Two Supramolecular Structures
  15. The Estenfication of Gibberellins with Dimethylformamide Dimethyl Acetal (DMFDMA)
  16. Regioselektive Cyclisierung von Thiocarbonsäureamiden mit Bisimidoyl- chloriden -Synthese von Thiazolidinen mit einer Ketenacetal-Substruktur / Regioselective Cyclization of Thiocarboxylic Amides with Bisimidoyl Chlorides - Synthesis of Thiadiazolidines Containing a Ketenacetal Substructure
  17. Synthesis and Crystal Structures of Indole Derivatives and Indolo[2,3-a]carbazoles as Building Blocks to or as Protein Kinase C Inhibitors
  18. Experimental and Computational Studies on Aminoguanidine Free Base, Monocation and Dication, Part II: Acid-Base Properties, Gas Phase Protonation Energies and Total Energies of Two Tautomers of the Free Base
  19. One-Pot Synthesis of Lanthanide and Yttrium Cryptates Containing Pyridine Units
  20. Notizen: Crystal Structure of Bis(triphenylstannyl)sulfite
  21. Notizen: On the Incorporation of Li(I) into the Fluoroapatite Lattice
  22. Kristallstruktur von Acetat-acidium- hexafluoroantimonat CH3C(OH)2SbF6 Crystal Structure of Acetate Acidium Hexafluoroantimonate CH3C(OH)2SbF6
  23. Notizen: Synthese und Kristallstruktur von [(Ph2PC2H4PPh2)N]Br / Synthesis and Crystal Structure of [(Ph2PC2H4PPh2)N]Br
https://doi.org/10.1515/znb-1997-1015
Keywords for this article
Gibberellins; Esterification; Dimethylformamide Dimethyl Acetal

Articles in the same Issue

  1. Zu den Phasenverhältnissen im System V/Nb/O, III Die Koexistenzbeziehungen der Mischkristallreihe V1−x-NbxO2 zu den binären und ternären Phasen der Subsysteme VO2/NbO2/V2O3 und VO2/NbO2/V2O 5/Nb2O5 / The Phase Relations in the System V/Nb/O , III Coexistance Relations of Mixed Crystals V1−x-NbxO2 to the Binary and Ternary Phases of Subsystems VO2/NbO2/V2O3 und VO2/NbO2/V2O 5/Nb2O5
  2. Darstellung, 11B-, 13C -, 1H-NMR- und Schwingungsspektren von 2,2' -Bipyridylundecahydro-closo-dodecaborat(1-) sowie Kristallstruktur von (Ph4As)[(2,2′-C10H8N2)B12Hn ]·CH3CN / Synthesis, 11B, 13C, 1H NMR and Vibrational Spectra of 2 ,2'-Bipyridyl-undecahydro-closo-dodecaborate(1-) and Crystal Structure of (Ph4As)[(2 ,2'-C10H8N2)B12H11]-CH3CN
  3. Zum System Ca/Mo/O: Phasendiagramm, Synthese und Charakterisierung der ternären Verbindungen / On the System Ca/Mo/O: Phase Diagram, Synthesis and Characterization of Ternary Compounds
  4. Synthese und Kristallstruktur von Tris(diethylamino)benzylphosphonium- bromiden: [(C2H5)2N]3PCH2C6H5+ Br- · CH3CN und [(C2H5)2N]3PCH2C6H5+ Br3- / Synthesis and Crystal Structures of Tris(diethylamino)benzylphosphonium Bromides: [(C2H5)2N]3PCH2C6H5+ Br- · CH3CN und [(C2H5)2N]3PCH2C6H5+ Br3-
  5. Reactivity and NMR Spectroscopic Properties of Tri(tert-butyl)plumbyl-amine
  6. Reaktion von Cacodylsäure (CH3)2AsOOH im System HF / MF5 (M = As, Sb) und Kristallstruktur von Difluordimethylarsonium- hexafluoroantimonat (CH3)2AsF2SbF6 / Reaction of Cacodylic Acid (CH3)2AsOOH in the System HF / MF5 (M = As, Sb), and Crystal Structure of Difluorodimethylarsonium Hexafluoroantimonate
  7. Darstellung von Cyan-iod-dinitrat NCI(ONO2)2 / Formation of Cyanoiodine Dinitrate NCI(ONO2)2
  8. Synthesis, IR and X-Ray Studies of a Dioxouranium(VI) Nitrate Complex with N,N′-Tetraethyl-N″ -trichloracetylphosphortriamide
  9. Metallkomplexe mit biologisch wichtigen Liganden, XCVI [1] Palladium(II)-, Platin(II)-und Rhodium(I)-Komplexe mit (Phenyl)C-H···Metall-Wechselwirkung von Diphenylmethylen- glycinestern und von 2-Phenyloxazolinonen / Metal Complexes of Biologically Important Ligands, XCVI [1] Palladium(II), Platinum(II) and Rhodium(I) Complexes with (Phenyl)-C-H ··· Metal Interaction of Diphenylmethylene Glycine Esters and from 2-Phenyloxazolones
  10. Phosphanhaltige Palladium(II)-, Platin(II)-und Gold(I)-Komplexe mit dem Di-tbutyliminodicarboxylat-Anion N(C O2tBu)2− / Phosphine Palladium(II), Platinum(II) and Gold(I) Complexes of the Di-tbutyliminocarboxylate Anion N(C O2tBu)2−
  11. Kohlenwasserstoffverbrückte Metallkomplexe, XLIII [1] Addition von η6-Anilin-tricarbonylchrom-Komplexen an den Ethenliganden von [(OC)5Re(η2-C2H4)]+ and [(η5-C5H5)Fe(CO)2(η2-C2H4)]+ / Hydrocarbon Bridged Metal Complexes, XLIII [1] Addition of η6- Aniline Tricarbonyl Chromium Complexes to the Ethene Ligand of [(OC)5Re(η2-C2H4)]+ and [(η5-C5H5)Fe(CO)2(η2-C2H4)]+
  12. Zur Kenntnis eines synthetischen Kentrolits/Melanotekits des Indiums: Pb2In2Si2O9 / On an Synthetic Kentrolite/Melanotekite of Indium: Pb2In2Si2O9
  13. Polysulfonylamine, XCVI [1]. Homokonjugate aus Di(organosulfonyl)aminen und ihren konjugierten Anionen: Vier Kristallstrukturen mit asymmetrischen [N -H ··· N ]--Wasserstoffbrücken / Polysulfonylamines, XCVI [1]. Homoconjugates Formed from Di(organosulfonyl)amines and their Conjugate Anions: Four Crystal Structures Featuring A symmetric [ N - H ··· N ]- Hydrogen Bonds
  14. Polysulfonylamine, XCVII [1] Di(organosulfonyl)amine und ihre konjugierten Anionen als simultane Baugruppen in zwei supramolekularen Strukturen / Polysulfonylamines, XCVII [1] Di(organosulfonyl)amines and their Conjugate Anions as Simultaneous Building Blocks in Two Supramolecular Structures
  15. The Estenfication of Gibberellins with Dimethylformamide Dimethyl Acetal (DMFDMA)
  16. Regioselektive Cyclisierung von Thiocarbonsäureamiden mit Bisimidoyl- chloriden -Synthese von Thiazolidinen mit einer Ketenacetal-Substruktur / Regioselective Cyclization of Thiocarboxylic Amides with Bisimidoyl Chlorides - Synthesis of Thiadiazolidines Containing a Ketenacetal Substructure
  17. Synthesis and Crystal Structures of Indole Derivatives and Indolo[2,3-a]carbazoles as Building Blocks to or as Protein Kinase C Inhibitors
  18. Experimental and Computational Studies on Aminoguanidine Free Base, Monocation and Dication, Part II: Acid-Base Properties, Gas Phase Protonation Energies and Total Energies of Two Tautomers of the Free Base
  19. One-Pot Synthesis of Lanthanide and Yttrium Cryptates Containing Pyridine Units
  20. Notizen: Crystal Structure of Bis(triphenylstannyl)sulfite
  21. Notizen: On the Incorporation of Li(I) into the Fluoroapatite Lattice
  22. Kristallstruktur von Acetat-acidium- hexafluoroantimonat CH3C(OH)2SbF6 Crystal Structure of Acetate Acidium Hexafluoroantimonate CH3C(OH)2SbF6
  23. Notizen: Synthese und Kristallstruktur von [(Ph2PC2H4PPh2)N]Br / Synthesis and Crystal Structure of [(Ph2PC2H4PPh2)N]Br
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